Improvement in harrows



J. H. BARR. Harrow.

No. 202,780. Patented April 23,1878.

N. PETERS PHOTO-LITHDGRAFHEH WASHINGTON. D C

UNITED STATES PATENT OEEIoE.

JOHN H. BARR, OF REDMON, ILLINOIS.

IMPROVEMENT IN HARROWS:

Specification forming part of Letters Patent No. 202,780, dated April23, 1878; application filed February 11, 1878.

To all whom it may concern Be it known that I. JOHN H. BARR, of Redmon,in the county of Edgar and State of Illinois, have invented certain newand useful Improvements in Harrows; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, which form apart of this specification, and in which Figure 1 is a top plan of myimproved double harrow; and Fig. 2 is a perspective of one of theharrows, detached.

Similar letters of reference indicate corresponding parts in both thefigures.

My invention relates more particularly to corn-barrows, used in sets organgs of two, but which may be used also in combination with cultivatorsfor the purpose of pulverizing the soil; and it consists in an 1mprovedconstruction and combination of parts of a harrow of this class,substantially as hereinafter more fully set forth, and pointed out inthe claims.

In the drawing, A A is the frame, which consists, in each. singleharrow, of two pieces, rabbeted and bolted together at a to form a sharpangle, as shown. Secured in these two pieces are the harrow-teeth b b,which may be of any suitable shape and construction. The pieces A A arebraced and united together by a round bar, B, the ends of which rest instaples b b, one in each piece, and also by a bar, 0, made in twopieces, one part, 0, being provided with a hole and set-screw, while theother part, 0, has a slot, through which the shank of the set-screwpasses, the two pieces 0 and 0 thus forming an extension rod or bar,which may be regulated or adjusted so as to keep the rear part of frameA A the proper distance apart. D D are braces, which pass from the frame(one on each side) up to the handle E, to which their upper ends aresecured, one on each side, by a bolt, 0. It will thus be seen that theextension-brace O O and the rods or braces D D form a triangle, the apexof which is at the point where the parts D D are united to the handle. Fis the beam or tongue, made, preferably, of

metal, and welded at a right angle to the round front brace B. Toprevent the staples b b from slipping on this bar or brace, the latterhas two annular shoulders, d d, secured upon it, each provided with aprojecting lug or ear, 0, which will control lateral motion. The end ofhandle E is secured to the bend of tongue F by a bolt, f, as shown.

Two of these harrows make a set or gang, and are for that purpose unitedby a crossbeam, G, as shown in Fig. 1. Upon each end of this beam issecured an adjustable plate or hearing, g, which may be adjusted inproper position upon the beam by one or more setscrews, h. Thisbearing-plate g is bent at a right angle, the projecting part 9' beingrounded, and terminating in an eye or bolt hole, through which a pin,is, may be inserted.

Upon the forward end of each of the tongues F is firmly secured a plate,H, the ends of which are bent at right angles, so as to form two ears,which are perforated to admit of the insertion of the rounded part 9. Itfollows that, by shifting the position of plates g 9 upon thecross-piece G, (by means of the bolts or screws h,) the distance betweenthe harrows may be regulated; while by rounding the part 9, upon whichthe harrow-tongues are hung, these (the tongues and their harrows) willhave a free rocking or oscillating motion upon the part g, so as toconform readily to undulations in the ground.

t is a clevis, fastened to the middle of beam G, to which thedouble-tree is secured in the usual manner.

The advantages of this harrow are that it is perfectly controllable whenused for harrowing corn. Each harrow being entirely independent of theother in the same gang, it will readily pass over or around any rocks orstubs that are in the way, and may be used on any kind of rough oruneven ground.

By detaching the harrows from the crossbeam, they may, if desired, beused singly; and, by adjusting the extension-plates G O in the mannerdescribed, the frame A A may be expanded or contracted, to harrow coarseor fine, according to the nature of the soil.

My improved harrow may readily be attached to and used in combinationwith a cultivator, as it is light of draft and easily adjusted, so as topulverize the soil after the plows have gone over it.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States 1. In combination with theadjustable V- shaped harrow-frame A A, armed with teeth I), and havingthe staples or keepers b b, the curved bar B, having annular shoulders dd and tongue F, extension-plates G (1, braces D D, and handle E thelatter being pivoted adjustably to the braces D D ate and to the bend oftongue F at f, substantially as and for the purpose herein shown anddescribed.

JOHN HENRY BARR.

Witnesses:

S. W. CALVIN, JACKSON YOUNG.

